<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <!-- 引入Vue -->
    <script type="text/javascript" src="../js/vue.js"></script>

</head>
<body>
    <!-- 准备好一个容器 -->
    <div id="root">
        <h2>今天天气很{{info}}</h2>
        <!-- 绑定事件的时候： @click="yyy" yyy可以写一些简单的语句 -->
        <!-- <button @click="isHot = !isHot">切换天气</button> -->
        <button @click="changeWeather">切换天气</button>
    </div>

</body>
    <script type="text/javascript">
        new Vue({
            el:'#root',
            data:{
                isHot: true,
            },
            computed:{
                info(){
                    return this.isHot ? '炎热' : '凉爽';
                }
            },
            methods: {
                changeWeather(){
                    this.isHot = !this.isHot
                }
            },
        })  
             

    </script>

</html>